Top Tech Jobs & Startup Jobs in Toronto

Senior Database Administrator with 10+ years experience responsible for database optimization, capacity planning, installation/migration, design, performance tuning, backup and recovery. Maintain and monitor Oracle 10g/11g/12c/19c in large multi-tenant environments and migrate end-of-life Oracle databases to current supported versions in on-premise and cloud data centers.

Senior full‑stack developer responsible for all SDLC phases: design, develop, test, deploy and maintain web applications using Oracle APEX. Build RESTful APIs with ORDS, design and optimize Oracle database schemas, SQL and PL/SQL, perform performance tuning, assess legacy architectures and recommend solutions, enforce security best practices, and work with cloud platforms such as OCI.

Lead application and information architecture for large-scale, interdependent systems. Define system, security and integration architectures (COTS, cloud, custom), guide architecture governance, design APIs, and develop conceptual, logical and physical data models using PowerDesigner.

Sustain, administer, support, and patch large COTS identity and access management systems (10+ years). Design, deploy, and sustain large-scale IAM implementations (10k+ users) using Entrust PKI, OIM, LDAP, web servers, WebLogic, Oracle DB across Solaris/Windows/AIX/Linux, and follow ITIL processes (SLM, Problem, Change, Release, Capacity).

Senior software developer to design, build, deploy, and troubleshoot n-tier enterprise applications using JPA/Hibernate and Spring Boot; work with PostgreSQL, PL/pgSQL and Azure Cosmos DB; implement front-end features with React/Angular; gather and document stakeholder requirements; apply design patterns and participate in technical leadership and quality assurance.

Senior Oracle DBA responsible for physical database design, administration, optimization, capacity planning, installation/migration, performance tuning, backup/recovery, and leading enterprise migrations to Oracle 19c across Windows, Solaris, and Linux environments.

Senior ETL developer responsible for designing, developing and maintaining data integration pipelines using Azure Data Factory, Databricks, Informatica and related Azure services. Duties include requirements gathering, complex data transformations, performance tuning for large volumes, CI/CD implementation, Oracle/SQL Server development, investigating pipeline data issues, and building BI integrations with IBM Cognos and Power BI.

Lead and manage projects for the Land & Resources Cluster with 10+ years' experience. Apply PMBOK and information management principles, ensure AODA compliance, recommend technology acquisitions, monitor project performance, troubleshoot issues, resolve conflicts across functional areas, and manage client expectations and communications.

Design and architect network security solutions in advanced SDN/SD‑WAN environments. Implement and evaluate firewalls, DDoS, IPS, NAC, endpoint and cloud security, and SASE. Build network dashboards using BI tools, run pilots/proofs-of-concept, and communicate technical recommendations to senior/executive stakeholders.

Lead defect triage and reporting, perform manual and automated regression testing, create detailed test cases, and execute diverse testing types (black box, penetration, security, system, unit, AODA, UAT). Hands-on with defect tracking tools like Azure DevOps. Public sector or contact centre experience is a plus.